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Hello Thomas, The function aggregate will do the job. Marc Mamin

Hi, you can use subset of data and superpose different histograms for each of them. hth, Marc

Hi, As the server www.omegahat.org seems to be down since quite a while, could someone send me the RSXML library for Windows2000 ? Many thanks, Marc Mamin

Hi, > tmpdata<-subset(myd, TYPE=="A") > levels(tmpdata$TYPE) > [1] "A" "B" "C" I'd like to get only "A" as output... Thanks for your help Marc

Hello, I'm looking for a procedure to detect trend changes or significant signals in time series as in the attached example. Could you point me to a library or reference I can start with? Thanks, Marc Mamin

Hallo, I want to open an ftp connection (with login and pwd), and then to retrieve the file list and the files'content of a given directory. Is this possible with R (on W2K)? Thanks for your hints, Marc Mamin

Hi, I try to use sqlSave to fill a date column in Oracle. value example: '05-JUL-03 13:35:09' sqlSave does not throw any error, but my table remain empty does anyone have experience with this ? Thanks, Marc...

Hello, I'd like to insert a "wait" function in my code. The reason is that I output timestamped files and I want to ensure that at least 1 second separes 2 files to avoid overwriting the previous file. Thanks...

Hello, I'd like to catch the warnings in a variable in order to evaluate them, but... > tt<-warnings() Warning messages: 1: XML Parsing Error: test.xml:2: xmlParseStartTag: invalid element name 2: XML Parsing Error: test.xml:3: Extra...

Hello, I called readLines on Suze 9.0 with a directory as parameter instead of a file. R freezed for a very long time; this morning I could read following error message: Error in readLines(paste("/home/",foo,"/",sep="")) : cannot...

Hello, I'm looking for a function that counts the occurences of a given character within a string. f('|','ab|c|d') => 2 More precisely, I need to complete a vector of strings to ensure that all elements have the...

Hello, I suppose this is a basic question but couldn't find a solution.: I have a large matrix with let say 3 columns: V1 V2 V3 a x 2 a x 4 a y 8 b z 16 and...

Hello, In order to increase the performance of a script I'd like to sort very large vectors containing repeated integer values. I'm not interesting in having the values sorted, but only grouped. I also need the equivalent of...

Hello, I'm looking for a fast way to retrieve the position of elements from a vector which match element in another vector. Example va<-c('a','e') vb<-c('a','b','c','d','e','f','e') f(va,vb...

Hi, Following plot is displaying fine, (starting arount the 10. september), except that the xaxp parameter has no effect. I'd like to have a tickmark every 7 days... plot(timeline, subset(myd, TYPE=="A")$list1, ylim=c(100*floor...

Hello, I would like to have a function that retrieve matching strings in the same way as with java.util.regex (java 1.4.2). Example: f('^.*(xx?)\\.([0-9]*)$','abcxx.785') => c('xx','785') First of all: Is it...

Hallo, I'd like to add grid lines to a lattice graph having 2 series of Y data. See these 2 examples: data(iris) [1] xyplot(Sepal.Length + Sepal.Width ~ Petal.Length , data = iris, allow.multiple = TRUE, scales = "same",type...

Hi, I have a strange issue under W2K; consider these two code extracts: 1) if(condition a){ trellis.device(png,filename = filename_a,... xyplot(... dev.off() } 2) if(condition a){ trellis.device(png,filename = filename_a,... xyplot(... } dev.off() In...

here is the solution: col<-c("#cc0000", "#330099", "#66cc00","#ff6600" ,"#ff00cc", "#00000", "#bo7080", "#7080bo") lty<-c(1,1,1,1,1,1,1,1) lwd<-c(1,1,1,1,1,1,1,1) mylines<-list(col=col,lty=lty...

Hi, R is very new for me, so excuse if my questions are too basic... BTW, are there any forum where new R users could get help without annoying this huge mailing list ? In following code, I'd like to...